Well done, especially given time constraints and the program you worked in. I haven't used musescore, but I imagine it's similar to finale, which I used to do all my composing in.
I loved trying to follow along in the scores for these, so thanks for including them. It reminded me of music school struggling to follow along in orchestral scores with a gazillion staves on one page so you have to turn every eight measures or so, so that was fun, a rare treat. Nice use of hemiola in your leitmotif, it helped make it very recognizable imo. If you can take some time to work this further, I know I would like to hear more tracks with the instrumentation you had in track three (probably my favorite one). I do like the rich orchestration in the bigger tracks, but I think there's room in your OST for songs with a full orchestra and songs with a smaller ensemble. Also, I would like to hear the leitmotif taken in a few more directions. (It started getting a bit repetitive for me.) But props for weaving it so thoroughly into every track.